the second one is in a sub-hyperplane-oriented way using
classes implementing this interface which obeys the visitor
design pattern. The visit order is provided by the visitor as
each node is first encountered. Each node is visited exactly
once.

Method Detail

visitOrder

Before attempting to visit an internal node, this method is
called to determine the desired ordering of the visit. It is
guaranteed that this method will be called before visitInternalNode for a given node, it will be
called exactly once for each internal node.